Home / 18,689.41-28,039.16-6,211.45

Finding the Fourth Proportional to 18,689.41, 28,039.16 and 6,211.45

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Solution

The fourth proportional to 18,689.41, 28,039.16 and 6,211.45 is: 9,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.41 : 28,039.16 = 6,211.45 : x
  2. Step 2: Convert to fraction form
    18,689.41/28,039.16 = 6,211.45/x
  3. Step 3: Cross multiply
    18,689.41x = 28,039.16 × 6,211.45
  4. Step 4: Simplify right side
    18,689.41x = 174,163,840.38
  5. Step 5: Solve for x
    x = 174,163,840.38/18,689.41
  6. Step 6: Final answer
    x = 9,318.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.